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rb_str_index_m: do not goto into a branch

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I'm not necessarily against every goto in general, but jumping into a
branch is definitely a bad idea.  Better refactor.
This commit is contained in:
卜部昌平 2020-06-17 15:31:10 +09:00
parent 6df790f22e
commit c29ec1ef1a
Notes: git 2020-06-29 11:06:49 +09:00 
Merged: https://github.com/ruby/ruby/pull/3247
1 changed files with 4 additions and 19 deletions
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23
string.c
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@ -3669,9 +3669,7 @@ rb_str_index_m(int argc, VALUE *argv, VALUE str)
}
}
if (SPECIAL_CONST_P(sub)) goto generic;
switch (BUILTIN_TYPE(sub)) {
case T_REGEXP:
if (RB_TYPE_P(sub, T_REGEXP)) {
if (pos > str_strlen(str, NULL))
return Qnil;
pos = str_offset(RSTRING_PTR(str), RSTRING_END(str), pos,
@ -3679,24 +3677,11 @@ rb_str_index_m(int argc, VALUE *argv, VALUE str)
pos = rb_reg_search(sub, str, pos, 0);
pos = rb_str_sublen(str, pos);
break;
generic:
default: {
VALUE tmp;
tmp = rb_check_string_type(sub);
if (NIL_P(tmp)) {
rb_raise(rb_eTypeError, "type mismatch: %s given",
rb_obj_classname(sub));
}
sub = tmp;
}
/* fall through */
case T_STRING:
}
else {
StringValue(sub);
pos = rb_str_index(str, sub, pos);
pos = rb_str_sublen(str, pos);
break;
}
if (pos == -1) return Qnil;